CN110829218A - Outdoor low-voltage power distribution cabinet of anti-riot rain - Google Patents

Abstract

The invention discloses a rainstorm-proof outdoor low-voltage power distribution cabinet in the technical field of low-voltage power distribution cabinets. , technical problems that cause damage to circuit components. The power distribution cabinet includes a controller and a cabinet, the cabinet is provided with a liquid level detection sensor and a drainage device that are electrically connected to the controller, the liquid level detection sensor is located at the bottom of the cabinet, and the drainage device The water inlet end is arranged at the bottom of the cabinet body, and the water outlet end of the drainage device is communicated with the outside of the cabinet body; the controller controls the drainage device according to the liquid level value in the power distribution cabinet obtained by the liquid level detection sensor.

Description

A rainstorm-proof outdoor low-voltage power distribution cabinet

technical field

The invention relates to an outdoor low-voltage power distribution cabinet for preventing rainstorm, and belongs to the technical field of low-voltage power distribution cabinets.

Background technique

Power distribution cabinets are divided into power distribution cabinets, lighting distribution cabinets, and metering cabinets, which are the final equipment of the power distribution system. It is responsible for distributing the electric energy of a certain circuit of the upper-level power distribution equipment to the nearest load. This level of power distribution equipment provides protection, monitoring and control of loads. Low-voltage power distribution cabinet is a kind of power distribution cabinet. It is used for power conversion and control of power, lighting and power distribution. It is a commonly used power distribution cabinet in power systems. The power distribution cabinet is generally required to have dustproof and rainproof capabilities, as well as certain ventilation and heat dissipation capabilities. Under the conditions of flying dust and strong wind, dust will be blown in from the door of the power distribution cabinet and accumulated on the power control equipment in the power distribution cabinet. If it is not cleaned in time, it will affect the operation of the power distribution cabinet. The existing low-voltage power distribution cabinet has poor waterproof effect, especially in rainy weather, rainwater often penetrates into the low-voltage power distribution cabinet, causing damage to circuit components.

SUMMARY OF THE INVENTION

In view of the deficiencies of the prior art, the purpose of the present invention is to provide a rainstorm-proof outdoor low-voltage power distribution cabinet, so as to solve the problem that the low-voltage power distribution cabinet in the prior art has poor waterproof effect, and rainwater easily penetrates into the low-voltage power distribution cabinet in rainstorm weather. Internal, technical issues that cause damage to circuit components.

For solving the above-mentioned technical problems, the technical scheme adopted in the present invention is:

A rainstorm-proof outdoor low-voltage power distribution cabinet includes a controller and a cabinet body, the cabinet body is provided with a liquid level detection sensor and a drainage device that are electrically connected to the controller, and the liquid level detection sensor is arranged in the cabinet body bottom, the water inlet end of the drainage device is arranged at the bottom of the cabinet body, and the water outlet end of the drainage device is communicated with the outside of the cabinet body;

The controller controls the drainage device according to the liquid level value in the power distribution cabinet obtained by the liquid level detection sensor.

Further, the drainage device includes a water pump motor electrically connected to the controller, pipes connected to both ends of the water pump motor, the pipe opening connected to the water inlet end of the water pump motor is arranged at the bottom of the cabinet, and the pipe opening connected to the water outlet end of the water pump motor is connected to the bottom of the cabinet. The cabinet is connected to the outside world.

Further, the pipe opening connected to the water outlet end of the pump motor is arranged on the side of the cabinet away from the bottom surface thereof.

Further, a solenoid valve electrically connected to the controller is provided in the pipeline connected to the water outlet end of the pump motor;

The controller also controls the solenoid valve according to the liquid level value in the power distribution cabinet obtained by the liquid level detection sensor.

Further, the cabinet body is also provided with a humidity detection sensor that is electrically connected to the controller, the side of the cabinet body is arranged with a cooling exhaust port and a cooling air inlet, and the cooling air inlet is provided with a cooling air inlet connected to the controller. Electrically connected blower fan;

The controller controls the blower fan according to the air humidity in the power distribution cabinet obtained by the humidity detection sensor.

Further, the cabinet body is also provided with a temperature detection sensor electrically connected with the controller, and the air outlet end of the blower fan is provided with a heating device electrically connected with the controller;

The controller controls the heating device or/and the blower fan according to the air temperature in the power distribution cabinet obtained by the temperature detection sensor.

Further, the controller includes a control chip, a signal detection module and a digital output module electrically connected to it respectively;

The controller is electrically connected to the liquid level detection sensor, the humidity detection sensor and the temperature detection sensor respectively through the signal detection module, and is electrically connected to the drainage device, the blower fan and the heating device through the digital output module.

Further, the controller further includes a control panel electrically connected with the control chip.

Further, it also includes a cabinet door hinged with the cabinet body, and the bottom of the cabinet body facing the cabinet door is provided with a sealing plate.

Compared with the prior art, the beneficial effects achieved by the present invention are as follows: the controller utilizes the humidity detection sensor arranged at the bottom of the cabinet to detect and obtain the liquid level value in the power distribution cabinet, and compare the liquid level value with the preset liquid level value threshold. , to judge whether there is water accumulation in the power distribution cabinet. If it is judged that there is water accumulation, the controller automatically controls the solenoid valve and the pump motor in the drainage device to act in sequence, so as to discharge the accumulated water in the power distribution cabinet. The solenoid valve is usually used to block the communication channel between the pump motor and the outside world to prevent foreign objects from entering the pipeline and hinder the normal operation of the pump motor. On this basis, the controller also uses the temperature detection sensor and the humidity detection sensor to detect and obtain the air temperature value and air humidity value in the power distribution cabinet, and the temperature value and humidity value are respectively different from the preset temperature value and humidity value. The parameters are compared to judge whether the humidity and temperature exceed the standard in the power distribution cabinet. If it is judged that the humidity and temperature exceed the standard, the controller automatically controls the blower fan and heating device to operate to maintain the temperature in the power distribution cabinet. Exhaust the humid air in the power distribution cabinet and blow off the dust accumulated on the electrical control equipment. The power distribution cabinet of the invention has a high degree of automation and is beneficial to ensure the normal operation of the electrical control equipment in the power distribution cabinet.

Description of drawings

Fig. 1 is the internal structure schematic diagram of the embodiment of the present invention;

2 is a schematic structural diagram of the drainage device in the embodiment of the present invention;

FIG. 3 is a schematic diagram of the connection structure of the controller in the embodiment of the present invention.

In the figure: 1. Cabinet body; 2. Cabinet door; 3. Controller; 4. Drainage device; 5. Blower fan; 6. Temperature detection sensor; 7. Humidity detection sensor; 8. Liquid level detection sensor; 9. Pipeline; 10. Pump motor; 11. Solenoid valve.

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings. The following examples are only used to illustrate the technical solutions of the present invention more clearly, and cannot be used to limit the protection scope of the present invention.

It should be noted that, in the description of the present invention, the terms "front", "rear", "left", "right", "upper", "lower", "inner", "outer" and the like indicate the orientation or position The relationship is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention rather than requiring the present invention to be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. The terms "front", "rear", "left", "right", "upper" and "lower" used in the description of the present invention refer to the directions in the drawings, and the terms "inner" and "outer" respectively refer to is the direction toward or away from the geometric center of a particular part.

The specific embodiment of the present invention provides an outdoor low-voltage power distribution cabinet with protection against rainstorm. As shown in FIG. 1 , which is a schematic diagram of the internal structure of an embodiment of the present invention, the power distribution cabinet includes a cabinet body 1 and a cabinet door 2 hinged therewith. , a controller 3 is installed on the inner side of the cabinet door 2, and the bottom of the cabinet body 1 facing the cabinet door 2 is provided with a sealing plate, which is seamlessly welded on the cabinet body 1. into the distribution cabinet. A drainage device 4 is installed on the right side of the cabinet body 1; a heat dissipation air inlet is provided on the right side of the cabinet body 1, and a heat dissipation exhaust port is provided on the left side. The air outlet is provided with a blower fan 5 whose air outlet end faces into the cabinet 1, and the air outlet end of the blower fan 5 is provided with a heating device; They are respectively used to detect and obtain the air temperature value and air humidity value in the power distribution cabinet; a liquid level detection sensor 8 is installed at the bottom of the cabinet 1 to detect and obtain the liquid level value in the power distribution cabinet after the power distribution cabinet enters the water. The blower fan 5 has a fan motor, the fan motor is installed on the fan fixing seat through the motor fixing plate, and the fan fixing seat is installed in the heat dissipation air inlet of the cabinet 1 through fixing bolts.

More specifically, as shown in FIG. 2, which is a schematic structural diagram of the drainage device in the embodiment of the present invention, the drainage device 4 includes a pipeline 9, a water pump motor 10 and a solenoid valve 11. There are two pipelines 9 and two pipelines. 9 are respectively installed on the water inlet end and the water outlet end of the pump motor 10 . The opening of the pipeline 9 installed at the water inlet end of the pump motor 10 is arranged at the bottom end of the cabinet 1 to facilitate the discharge of the accumulated water in the power distribution cabinet; a solenoid valve 11 is installed in the pipeline 9, and its purpose is to prevent foreign objects from entering. In the pipeline 9, the normal operation of the pump motor 10 is hindered, resulting in the inability to discharge the accumulated water in the power distribution cabinet smoothly; the solenoid valve 11 includes a solenoid coil, a valve body and a valve core, the solenoid coil is installed on the valve body, and the valve body is installed on the spool. The opening of the pipe 9 installed at the water outlet end of the pump motor 10 is set at the upper position of the side of the cabinet 1 to prevent excessive water accumulation outside the power distribution cabinet from being poured into the power distribution cabinet through the opening of the pipe 9 .

As shown in FIG. 3, it is a schematic diagram of the connection structure of the controller in the embodiment of the present invention. The controller 3 includes a control panel, a control chip, a digital output module and a signal detection module. The input end of the control chip is connected to the The signal detection module and the control panel are respectively connected, and the output end of the control chip is connected with the digital quantity output module. The signal detection module is respectively connected with the signal output ends of the temperature detection sensor 6, the humidity detection sensor 7 and the liquid level detection sensor 8; the digital output module is respectively connected with the blower fan 5, the solenoid valve 11, the water pump motor 10, the heating The power input end of the device is connected; the control panel is used to set the threshold parameters of the aforementioned liquid level value, temperature value and humidity value, so as to facilitate the flexible and effective management of the power distribution cabinet of the present invention by the staff.

In this embodiment, in order to prevent rainwater from penetrating into the cabinet 1 from the gap between the cabinet 1 and the cabinet door 2 under heavy rain conditions, and causing damage to the electrical equipment in the cabinet 1, the liquid level detection sensor 8 is used to detect and obtain The liquid level value in the power distribution cabinet is transmitted to the controller 3 through the signal detection module, and the control chip in the controller 3 compares the liquid level value with the preset liquid level value threshold. If the liquid level value exceeds the liquid level value threshold, the control chip in the controller 3 first controls the solenoid valve 11 to act through the digital output module, so that the pump motor 10 is connected to the outside through the pipeline 9, and then controls the pump motor 10 to operate through the digital output module. Move to discharge the accumulated water in the power distribution cabinet until the above-mentioned liquid level value is lower than the preset liquid level value threshold. In order to avoid damage to circuit components caused by water accumulation in the power distribution cabinet, the liquid level threshold can be set to 0 through the control panel to ensure that the power distribution cabinet is always in a state of no water accumulation.

The humidity detection sensor 7 detects and obtains the air humidity value in the power distribution cabinet, and transmits the humidity value to the controller 3 through the signal detection module, and the control chip in the controller 3 compares the humidity value with the preset humidity value threshold . If the humidity value exceeds the humidity value threshold, the control chip in the controller 3 controls the blower fan 5 to act through the digital output module, thereby forming air convection between the heat dissipation air inlet and the heat dissipation exhaust port. The moist air inside is discharged out of the power distribution cabinet through the cooling exhaust port.

The temperature detection sensor 6 detects and obtains the air temperature value in the power distribution cabinet, and transmits the temperature value to the controller 3 through the signal detection module, and the control chip in the controller 3 compares the temperature value with the preset temperature value threshold . If the temperature value is lower than the temperature value threshold, the control chip in the controller 3 controls the blower fan 5 and the heating device to act simultaneously through the digital output module, and quickly conducts the heat generated by the heating device to the power distribution through the blower fan 5 The air in the cabinet is maintained to maintain the temperature in the power distribution cabinet, and the humid air in the power distribution cabinet is exhausted.

In this embodiment, the controller 3 uses the humidity detection sensor 7 disposed at the inner bottom of the cabinet 1 to detect and obtain the liquid level value in the power distribution cabinet, and compares the liquid level value with the preset liquid level value threshold to determine the power distribution cabinet Whether there is water accumulation in the interior, if it is judged that there is accumulation of water, the controller 3 automatically controls the solenoid valve 11 and the pump motor 10 in the drainage device 4 to act in sequence, so as to discharge the accumulated water in the power distribution cabinet. The solenoid valve 11 is usually used to block the communication channel between the water pump motor 10 and the outside world, so as to prevent foreign objects from entering the pipeline 9 and hinder the normal operation of the water pump motor 10 . On this basis, the controller 3 also uses the temperature detection sensor 6 and the humidity detection sensor 7 to detect and obtain the air temperature value and air humidity value in the power distribution cabinet, and the temperature value and humidity value are respectively matched with the preset temperature value and humidity value. The value of the threshold parameter is compared to determine whether the humidity and temperature exceed the standard in the power distribution cabinet. If it is judged that the humidity and temperature exceed the standard, the controller 3 automatically controls the blower fan 5 and the heating device to operate to maintain the power distribution cabinet. At the same time, the humid air in the power distribution cabinet is exhausted, and the dust accumulated on the electrical control equipment is blown away. The power distribution cabinet of the invention has a high degree of automation and is beneficial to ensure the normal operation of the electrical control equipment in the power distribution cabinet.

The above are only the preferred embodiments of the present invention. It should be pointed out that for those skilled in the art, without departing from the technical principle of the present invention, several improvements and modifications can also be made. These improvements and modifications It should also be regarded as the protection scope of the present invention.

Claims (9)

1. A rainstorm-proof outdoor low-voltage power distribution cabinet, characterized by comprising a controller (3) and a cabinet (1), wherein the cabinet (1) is provided with electrical connections to the controller (3) respectively. The liquid level detection sensor (8) and the drainage device (4) are provided, the liquid level detection sensor (8) is arranged at the bottom of the cabinet (1), and the water inlet end of the drainage device (4) is arranged at the cabinet (1). ) at the bottom, the outlet end of the drainage device (4) communicates with the outside of the cabinet (1); The controller (3) controls the drainage device (4) according to the liquid level value in the power distribution cabinet obtained by the liquid level detection sensor (8). 2. The outdoor low-voltage power distribution cabinet for rainstorm protection according to claim 1, characterized in that the drainage device (4) comprises a water pump motor (10) electrically connected to the controller (3) and connected to the water pump motor (10) The pipes (9) at both ends, the openings of the pipes (9) connected to the water inlet end of the pump motor (10) are located at the bottom of the cabinet (1), and the openings of the pipes (9) connected to the water outlet end of the pump motor (10) are connected to the cabinet (1). Body (1) is connected to the outside world. 3. The outdoor low-voltage power distribution cabinet for rainstorm prevention according to claim 2, characterized in that the opening of the pipe (9) connected to the water outlet of the pump motor (10) is provided on the side of the cabinet (1) away from the bottom surface. 4. The outdoor low-voltage power distribution cabinet for rainstorm prevention according to claim 2, characterized in that a solenoid valve electrically connected to the controller (3) is provided in the pipeline (9) connected to the water outlet end of the pump motor (10). (11); The controller (3) also controls the solenoid valve (11) according to the liquid level value in the power distribution cabinet obtained by the liquid level detection sensor (8). 5. The outdoor low-voltage power distribution cabinet for rainstorm prevention according to claim 1, wherein the cabinet body (1) is further provided with a humidity detection sensor (7) electrically connected to the controller (3), A cooling exhaust port and a cooling air inlet are arranged on the sides of the cabinet body (1) facing each other, and a blowing fan (5) electrically connected to the controller (3) is arranged in the cooling air inlet; The controller (3) controls the blower fan (5) according to the air humidity in the power distribution cabinet obtained by the humidity detection sensor (7). 6. The outdoor low-voltage power distribution cabinet for rainstorm prevention according to claim 5, wherein the cabinet body (1) is further provided with a temperature detection sensor (6) electrically connected to the controller (3), The air outlet end of the blower fan (5) is provided with a heating device that is electrically connected to the controller (3); The controller (3) controls the heating device or/and the blower fan (5) according to the air temperature in the power distribution cabinet obtained by the temperature detection sensor (6). 7 . The outdoor low-voltage power distribution cabinet for rainstorm prevention according to claim 6 , wherein the controller ( 3 ) comprises a control chip, a signal detection module and a digital output module electrically connected to it respectively; 7 . The controller (3) is electrically connected with the liquid level detection sensor (8), the humidity detection sensor (7), and the temperature detection sensor (6) respectively through the signal detection module, and is respectively connected with the drainage device (4), the drum through the digital output module The air fan (5) and the heating device are electrically connected. 8 . The outdoor low-voltage power distribution cabinet for rainstorm prevention according to claim 7 , wherein the controller ( 3 ) further comprises a control panel electrically connected with the control chip. 9 . 9. The rainstorm-proof outdoor low-voltage power distribution cabinet according to any one of claims 1 to 8, further comprising a cabinet door (2) hinged to the cabinet body (1), the cabinet body (1) ) is provided with a sealing plate at the bottom of the side facing the cabinet door (2).

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